diff --git a/src/bench_cbor4ii.rs b/src/bench_cbor4ii.rs
index dee2782..a080b60 100644
--- a/src/bench_cbor4ii.rs
+++ b/src/bench_cbor4ii.rs
@@ -9,19 +9,17 @@ where
 
     let mut group = c.benchmark_group(format!("{}/cbor4ii", name));
 
-    let mut serialize_buffer = vec![0; BUFFER_LEN];
+    let mut serialize_buffer = Vec::with_capacity(BUFFER_LEN);
     group.bench_function("serialize", |b| {
         b.iter(|| {
-            serialize_buffer = cbor4ii::serde::to_vec(
-                std::mem::take(black_box(&mut serialize_buffer)),
-                black_box(&data),
-            )
-            .unwrap();
+            serialize_buffer.clear();
+            cbor4ii::serde::to_writer(black_box(&mut serialize_buffer), black_box(&data)).unwrap();
             black_box(());
         })
     });
 
-    let deserialize_buffer = cbor4ii::serde::to_vec(Vec::new(), &data).unwrap();
+    let mut deserialize_buffer = Vec::new();
+    cbor4ii::serde::to_writer(&mut deserialize_buffer, &data).unwrap();
 
     group.bench_function("deserialize", |b| {
         b.iter(|| {